EP2635490A1 - Landing gear bogie beam with jacking dome - Google Patents

Landing gear bogie beam with jacking dome

Info

Publication number
EP2635490A1
EP2635490A1 EP11778948.7A EP11778948A EP2635490A1 EP 2635490 A1 EP2635490 A1 EP 2635490A1 EP 11778948 A EP11778948 A EP 11778948A EP 2635490 A1 EP2635490 A1 EP 2635490A1
Authority
EP
European Patent Office
Prior art keywords
axle
jacking dome
jacking
bogie beam
dome fitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11778948.7A
Other languages
German (de)
French (fr)
Other versions
EP2635490B1 (en
Inventor
Ian Bennett
Matthew Sexton
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Safran Landing Systems UK Ltd
Original Assignee
Messier Dowty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Messier Dowty Ltd filed Critical Messier Dowty Ltd
Publication of EP2635490A1 publication Critical patent/EP2635490A1/en
Application granted granted Critical
Publication of EP2635490B1 publication Critical patent/EP2635490B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/001—Devices not provided for in the groups B64C25/02 - B64C25/68
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C25/00—Alighting gear
    • B64C25/32—Alighting gear characterised by elements which contact the ground or similar surface 
    • B64C25/34—Alighting gear characterised by elements which contact the ground or similar surface  wheeled type, e.g. multi-wheeled bogies

Definitions

  • bogie beam carrying multiple wheel axles and wheels
  • the bogie beam typically being pivotally attached to one end of a telescopic strut. From time to time it is necessary to jack up the bogie beam whilst the aircraft is on the ground, typically to allow individual wheels to be replaced, for example in the case of the aircraft having suffered a blow-out during landing.
  • the current technical standards stipulate that the bogie beam includes one or more jacking domes that are of a particular shape to engage with a correspondingly shaped jacking pad on the jacking trolley used to jack up the landing gear.
  • a conventional arrangement for the jacking dome is for the dome to be formed integrally with the metal alloy bogie beam, typically at either end below the axles.
  • the bolted jacking dome attachment must be sufficiently wide and deep such that it can transfer the loads from the jacking dome fitting into the bogie. Additionally, the jacking dome fitting must be stable against side loadings.
  • the bogie beam may be strengthened but this either locally reduces the bore of the bogie, making machining more difficult, or requires extra material on the outside of the bogie, reducing ground clearance (which in extreme circumstances may result in it not being possible to place a jack under the jacking dome) and may require an increase in the size of the bogie beam forging.
  • an aircraft landing gear assembly comprising a bogie beam, an axle extending through the bogie beam and a jacking dome fitting extending through a sidewall of the bogie beam and arranged to be in contact with the axle during jacking so as to transfer vertical loads applied to the jacking dome fitting directly to the axle.
  • the bogie beam sidewall may include a region of increased thickness through which the jacking dome fitting extends and which is arranged to react lateral loadings applied to the jacking dome fitting.
  • the region of increased thickness may be either integrally formed in the bogie beam sidewall or may comprise a separate element secured to the bogie beam sidewall.
  • the jacking dome fitting is preferably biased into contact with the axle.
  • the jacking dome fitting may be secured to one end of an elongate resilient element, the elongate resilient element biasing the jacking dome fitting into contact with the axle.
  • one or more wedge elements may be located between a portion of the jacking dome fitting and the bogie beam sidewall, thereby urging the jacking dome fitting into contact with the axle.
  • the jacking dome fitting may include a threaded collar in engagement with a threaded portion of the jacking dome fitting and in engagement with the bogie beam sidewall, whereby the threaded collar urges the jacking dome fitting into contact with the axle.
  • the jacking dome fitting may comprise a further portion in mechanical engagement with the axle, whereby lateral loads applied to the jacking dome fitting are transmitted to the axle.
  • the further portion may encircle a region of the axle and the further portion and the axle may include aligned recesses arranged to receive a locking spigot pin.
  • Figure 1 shows a bogie beam having twin axles and jacking domes according to the prior art
  • Figure 2 is a partial cross-section through the bogie beam of figure 1 showing a separate jacking dome fitting according to the prior art;
  • Figure 3 schematically illustrates a jacking dome fitting according to a first embodiment of the present invention
  • Figure 4 schematically illustrates a jacking dome fitting according to a second embodiment of the present invention
  • Figure 5 schematically illustrates a jacking dome fitting according to a third embodiment of the present invention
  • Figure 6 schematically illustrates a further embodiment of the present invention
  • Figure 7 shows a further variation of the embodiment of the present invention shown in Figure 6.
  • FIG 1 shows a side view of a bogie beam with twin axles known from the prior art.
  • the bogie beam 2 has an axle 4 located at either end of the bogie beam. Located below each of the axles 4 are individual jacking domes 6.
  • Figure 2 shows a simplified cross-section through one end of the bogie beam, axle and jacking dome.
  • the bogie beam 2 is a hollow body defined by a sidewall 8.
  • the axle 4 is located and secured to the bogie beam sidewall 8 by means of an end fitting 10 typically referred to as a diaphragm.
  • a separate jacking dome 6 is located through a hole formed in the sidewall 8 of the bogie beam.
  • the region of the bogie beam sidewall 8 immediately adjacent to the hole through which the jacking dome 6 passes has a localised thickness greater than the remainder of the sidewall 8, thus forming a socket 12 that has to carry both the vertical loads arising during jacking of the landing gear and any lateral loads applied to the jacking dome. Consequently, the socket 12 experiences high local stresses.
  • FIG 3 schematically illustrates a first embodiment of the present invention, in similar cross-section to Figure 2.
  • the embodiment of the present invention shown in Figure 3 includes an axle 4 located and secured to the sidewall 8 of a bogie beam by means of a diaphragm 10.
  • a separate jacking dome fitting 6 passes through a hole formed in the bogie beam sidewall 8, such that one end of the jacking dome fitting presents a conventional jacking dome for engagement with conventional jacking apparatus.
  • the opposite end of the jacking dome fitting extends into the interior cavity of the bogie beam, extending into contact with the axle 4.
  • the end of the jacking dome fitting in contact with the axle is shaped in a complimentary manner to the axle to provide a large contact area.
  • a socket 12 is formed in the sidewall 8 of the bogie beam surrounding the jacking dome fitting, the socket either being formed integrally with the sidewall 8 of the bogie beam or as an additional element attached to the exterior of the bogie beam sidewall.
  • the axle 4 has a stiffer local section than the bogie beam and therefore the localised stresses caused by the vertical loads are not as great as would otherwise be experienced by the bogie beam.
  • any lateral loadings applied to the jacking dome are transferred, or reacted, through the socket 12 formed in the sidewall 8 of the bogie beam.
  • the socket is only required to react the lateral loads and is no longer to react the vertical loads, the localised stress induced in the bogie beam by the lateral loads only is significantly less than the combined lateral and vertical loadings seen by the bogie beams of the prior art.
  • the jacking dome fitting 6 is biased into contact with the axle 4 by means of a retaining bolt 14 that functions as a cantilever spring to preload the jacking dome fitting against the axle 4. It is preferable for the jacking dome fitting to be biased into contact with the axle to reduce the risk of fretting (wear caused to either the jacking dome fitting or axle caused by relative movement between the two parts) or to avoid corrosion arising from moisture ingress between the axle and jacking dome fitting. As illustrated in Figure 3, the retaining bolt 14 secures the jacking dome fitting 6 to the diaphragm 10.
  • the retaining bolt may be used as a cantilever spring to bias the jacking dome fitting into an unloaded position with a positive clearance with the axle, in order to avoid fretting.
  • the resilience would be such that the jacking dome fitting comes into contact with the axle when loaded by a jack.
  • a further embodiment of the present invention is also schematically illustrated in Figure 4.
  • the generally arrangement of the parts is as illustrated and described with reference to Figure 3.
  • a number of individual wedges 16 are located between the inner face of the bogie beam sidewall 8 and a flanged portion of the jacking dome fitting 6.
  • the wedges 16 may, for example, comprise semicircular wedge sections located around the periphery of the jacking dome fitting 6.
  • a retaining bolt 18 allows the wedges 16 to be urged towards one another, thereby exerting a corresponding bias force on the jacking dome fitting 6 to bias the fitting into contact with the axle 4.
  • FIG. 5 A further arrangement for biasing the jacking dome fitting into contact with the axle 4 is illustrated in Figure 5.
  • the jacking dome fitting 6 includes a threaded portion 22 located in the interior space of the bogie beam. In threaded engagement with this threaded portion 22 is a threaded collar 20.
  • the threaded collar 20 which may for example be a conventional threaded nut, is rotated such that it bears against the inner surface of the bogie beam sidewall 8 and imparts a resulting translational force to the jacking dome fitting 6 to bias the fitting into contact with the axle 4.
  • a locking bolt 18 may additionally be provided to secure the locking collar into place once assembly of the jacking dome, axle and bogie beam assembly is complete.
  • FIG. 6 schematically illustrates an embodiment of the present invention in which the lateral loads are no longer reacted solely by the socket.
  • the jacking dome fitting 6 includes a further portion 24 that substantially encircles the outer circle of the axle 4.
  • Corresponding recesses are formed in the axle and further portion 24 of the jacking dome fitting through which a spigot pin 26 is located, the spigot pin also being located in a corresponding recess in the diaphragm 10, thus interlocking the further portion 24 of the jacking dome fitting 6 to the axle 4.
  • the recesses in the jacking dome fitting and the axle 4 through which the spigot pin is located are arranged to be in the region of the neutral axis of the axle where localised stresses are less critical.
  • any transverse loads applied to the jacking dome 6 are reacted through the axle 4 via the further portion 24 of the jacking dome fitting and consequently the socket 12 no longer has to react a moment but simply acts as a lug with a simple shear load that can be made much thinner than for the previously discussed embodiments.
  • the further portion 24 of the jacking dome fitting may be replaced with a band-clamp arrangement that may be clamped sufficiently tight enough such that the friction generated between the band-clamp and the axle 4 provides an adequate load transfer path into the axle 4, allowing the spigot 26 to be dispensed with.
  • FIG. 7 A further variation of this embodiment is illustrated in Figure 7 in which the further portion 24 of the jacking dome fitting 6 have one or more protrusions 28 formed thereon that are arranged to be located within correspondingly shaped recesses formed in the axle 4, thus mechanically engaging the jacking dome fitting with the axle and providing the necessary load transfer path.
  • the projections 28 and corresponding recesses formed in the axle 4 are located near the neutral axis of the axle to minimise local stresses.
  • the illustrated embodiments of the present invention therefore provide an aircraft landing gear assembly including a jacking dome fitting that is arranged to transfer vertical jacking loads directly to an axle within the landing gear assembly, rather than the bogie beam itself, thus reducing the localised stresses induced in the bogie beam sidewall.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Tires In General (AREA)
  • Connection Of Plates (AREA)

Abstract

An aircraft landing gear assembly comprising a bogie beam (2), an axle (4) extending through the bogie beam and a jacking dome fitting (6) extending through a sidewall (8) of the bogie beam and arranged to transfer vertical loads applied to the jacking dome fitting to the axle.

Description

Landing Gear Bogie Beam with Jacking Dome
Larger commercial and military aircraft typically have main landing gear arrangements that include a bogie beam carrying multiple wheel axles and wheels, the bogie beam typically being pivotally attached to one end of a telescopic strut. From time to time it is necessary to jack up the bogie beam whilst the aircraft is on the ground, typically to allow individual wheels to be replaced, for example in the case of the aircraft having suffered a blow-out during landing. The current technical standards stipulate that the bogie beam includes one or more jacking domes that are of a particular shape to engage with a correspondingly shaped jacking pad on the jacking trolley used to jack up the landing gear.
A conventional arrangement for the jacking dome is for the dome to be formed integrally with the metal alloy bogie beam, typically at either end below the axles. However, with larger aircraft of greater weight and passenger/freight capacity high localised stresses can result in the bogie beam whilst jacking the aircraft with the localised stresses potentially exceeding the safe stress loadings of the bogie beam material.
A conventional alternative would be to use a separate steel jacking dome bolted through the bottom surface of the bogie beam. However this introduces other problems. When loaded, i.e. whilst jacking the aircraft, the area around the jacking dome becomes highly stressed with a tendency for the bottom of the bogie beam to deform inwards. This is exacerbated by having to have a hole through the bogie for a separate jacking dome. The bolted jacking dome attachment must be sufficiently wide and deep such that it can transfer the loads from the jacking dome fitting into the bogie. Additionally, the jacking dome fitting must be stable against side loadings. The bogie beam may be strengthened but this either locally reduces the bore of the bogie, making machining more difficult, or requires extra material on the outside of the bogie, reducing ground clearance (which in extreme circumstances may result in it not being possible to place a jack under the jacking dome) and may require an increase in the size of the bogie beam forging.
According to a first aspect of the present invention there is provided an aircraft landing gear assembly comprising a bogie beam, an axle extending through the bogie beam and a jacking dome fitting extending through a sidewall of the bogie beam and arranged to be in contact with the axle during jacking so as to transfer vertical loads applied to the jacking dome fitting directly to the axle. Additionally, the bogie beam sidewall may include a region of increased thickness through which the jacking dome fitting extends and which is arranged to react lateral loadings applied to the jacking dome fitting. Additionally, the region of increased thickness may be either integrally formed in the bogie beam sidewall or may comprise a separate element secured to the bogie beam sidewall.
Additionally or alternatively, the jacking dome fitting is preferably biased into contact with the axle. The jacking dome fitting may be secured to one end of an elongate resilient element, the elongate resilient element biasing the jacking dome fitting into contact with the axle. Alternatively, one or more wedge elements may be located between a portion of the jacking dome fitting and the bogie beam sidewall, thereby urging the jacking dome fitting into contact with the axle. In a further alternative, the jacking dome fitting may include a threaded collar in engagement with a threaded portion of the jacking dome fitting and in engagement with the bogie beam sidewall, whereby the threaded collar urges the jacking dome fitting into contact with the axle.
In a further embodiment the jacking dome fitting may comprise a further portion in mechanical engagement with the axle, whereby lateral loads applied to the jacking dome fitting are transmitted to the axle. The further portion may encircle a region of the axle and the further portion and the axle may include aligned recesses arranged to receive a locking spigot pin.
Embodiments of the present invention are described below as non-limiting examples with reference to the accompanying figures, of which: Figure 1 shows a bogie beam having twin axles and jacking domes according to the prior art;
Figure 2 is a partial cross-section through the bogie beam of figure 1 showing a separate jacking dome fitting according to the prior art; Figure 3 schematically illustrates a jacking dome fitting according to a first embodiment of the present invention;
Figure 4 schematically illustrates a jacking dome fitting according to a second embodiment of the present invention;
Figure 5 schematically illustrates a jacking dome fitting according to a third embodiment of the present invention;
Figure 6 schematically illustrates a further embodiment of the present invention; and Figure 7 shows a further variation of the embodiment of the present invention shown in Figure 6.
Figure 1 shows a side view of a bogie beam with twin axles known from the prior art. The bogie beam 2 has an axle 4 located at either end of the bogie beam. Located below each of the axles 4 are individual jacking domes 6. Figure 2 shows a simplified cross-section through one end of the bogie beam, axle and jacking dome. The bogie beam 2 is a hollow body defined by a sidewall 8. The axle 4 is located and secured to the bogie beam sidewall 8 by means of an end fitting 10 typically referred to as a diaphragm. Immediately below the axle 4 a separate jacking dome 6 is located through a hole formed in the sidewall 8 of the bogie beam. As can be seen from Figure 2, the region of the bogie beam sidewall 8 immediately adjacent to the hole through which the jacking dome 6 passes has a localised thickness greater than the remainder of the sidewall 8, thus forming a socket 12 that has to carry both the vertical loads arising during jacking of the landing gear and any lateral loads applied to the jacking dome. Consequently, the socket 12 experiences high local stresses.
Figure 3 schematically illustrates a first embodiment of the present invention, in similar cross-section to Figure 2. In a similar manner to the prior art arrangement shown in Figure 2, the embodiment of the present invention shown in Figure 3 includes an axle 4 located and secured to the sidewall 8 of a bogie beam by means of a diaphragm 10. A separate jacking dome fitting 6 passes through a hole formed in the bogie beam sidewall 8, such that one end of the jacking dome fitting presents a conventional jacking dome for engagement with conventional jacking apparatus. However, in contrast to the prior art the opposite end of the jacking dome fitting extends into the interior cavity of the bogie beam, extending into contact with the axle 4. Preferably, the end of the jacking dome fitting in contact with the axle is shaped in a complimentary manner to the axle to provide a large contact area. A socket 12 is formed in the sidewall 8 of the bogie beam surrounding the jacking dome fitting, the socket either being formed integrally with the sidewall 8 of the bogie beam or as an additional element attached to the exterior of the bogie beam sidewall. As a consequence of the jacking dome fitting extending through the bogie beam sidewall and into contact with the axle 4, the vertical loads applied to the jacking dome during jacking operations are transferred directly into the axle 4, rather than into the bogie beam, as in the prior art. The axle 4 has a stiffer local section than the bogie beam and therefore the localised stresses caused by the vertical loads are not as great as would otherwise be experienced by the bogie beam. In the embodiment shown in Figure 3, any lateral loadings applied to the jacking dome are transferred, or reacted, through the socket 12 formed in the sidewall 8 of the bogie beam. However, since the socket is only required to react the lateral loads and is no longer to react the vertical loads, the localised stress induced in the bogie beam by the lateral loads only is significantly less than the combined lateral and vertical loadings seen by the bogie beams of the prior art.
In the particular embodiment illustrated in figure 3, the jacking dome fitting 6 is biased into contact with the axle 4 by means of a retaining bolt 14 that functions as a cantilever spring to preload the jacking dome fitting against the axle 4. It is preferable for the jacking dome fitting to be biased into contact with the axle to reduce the risk of fretting (wear caused to either the jacking dome fitting or axle caused by relative movement between the two parts) or to avoid corrosion arising from moisture ingress between the axle and jacking dome fitting. As illustrated in Figure 3, the retaining bolt 14 secures the jacking dome fitting 6 to the diaphragm 10.
Alternatively the retaining bolt may be used as a cantilever spring to bias the jacking dome fitting into an unloaded position with a positive clearance with the axle, in order to avoid fretting. The resilience would be such that the jacking dome fitting comes into contact with the axle when loaded by a jack.
A further embodiment of the present invention is also schematically illustrated in Figure 4. The generally arrangement of the parts is as illustrated and described with reference to Figure 3. However, in place of the cantilever spring retaining bolt 14 of Figure 3, in the embodiment shown in Figure 4 a number of individual wedges 16 are located between the inner face of the bogie beam sidewall 8 and a flanged portion of the jacking dome fitting 6. The wedges 16 may, for example, comprise semicircular wedge sections located around the periphery of the jacking dome fitting 6. A retaining bolt 18 allows the wedges 16 to be urged towards one another, thereby exerting a corresponding bias force on the jacking dome fitting 6 to bias the fitting into contact with the axle 4.
A further arrangement for biasing the jacking dome fitting into contact with the axle 4 is illustrated in Figure 5. In this embodiment the jacking dome fitting 6 includes a threaded portion 22 located in the interior space of the bogie beam. In threaded engagement with this threaded portion 22 is a threaded collar 20. To bias the jacking dome fitting 6 against the axle the threaded collar 20, which may for example be a conventional threaded nut, is rotated such that it bears against the inner surface of the bogie beam sidewall 8 and imparts a resulting translational force to the jacking dome fitting 6 to bias the fitting into contact with the axle 4. A locking bolt 18 may additionally be provided to secure the locking collar into place once assembly of the jacking dome, axle and bogie beam assembly is complete.
All of the embodiments described above with reference to Figures 3-5 include a socket 12 through which the jacking dome fitting 6 passes that is of sufficient thickness that it can react a moment to support the jacking dome when lateral loads are applied. In certain circumstances the dimensions of the socket may be undesirably large. In these circumstances an alternative mechanism for reacting lateral loads applied to the jacking dome is required. Figure 6 schematically illustrates an embodiment of the present invention in which the lateral loads are no longer reacted solely by the socket. In the embodiment illustrated in Figure 6 the jacking dome fitting 6 includes a further portion 24 that substantially encircles the outer circle of the axle 4. Corresponding recesses are formed in the axle and further portion 24 of the jacking dome fitting through which a spigot pin 26 is located, the spigot pin also being located in a corresponding recess in the diaphragm 10, thus interlocking the further portion 24 of the jacking dome fitting 6 to the axle 4. The recesses in the jacking dome fitting and the axle 4 through which the spigot pin is located are arranged to be in the region of the neutral axis of the axle where localised stresses are less critical. Consequently, any transverse loads applied to the jacking dome 6 are reacted through the axle 4 via the further portion 24 of the jacking dome fitting and consequently the socket 12 no longer has to react a moment but simply acts as a lug with a simple shear load that can be made much thinner than for the previously discussed embodiments. In an alternative arrangement the further portion 24 of the jacking dome fitting may be replaced with a band-clamp arrangement that may be clamped sufficiently tight enough such that the friction generated between the band-clamp and the axle 4 provides an adequate load transfer path into the axle 4, allowing the spigot 26 to be dispensed with. A further variation of this embodiment is illustrated in Figure 7 in which the further portion 24 of the jacking dome fitting 6 have one or more protrusions 28 formed thereon that are arranged to be located within correspondingly shaped recesses formed in the axle 4, thus mechanically engaging the jacking dome fitting with the axle and providing the necessary load transfer path. As with the embodiment illustrated in Figure 6, the projections 28 and corresponding recesses formed in the axle 4 are located near the neutral axis of the axle to minimise local stresses.
The illustrated embodiments of the present invention therefore provide an aircraft landing gear assembly including a jacking dome fitting that is arranged to transfer vertical jacking loads directly to an axle within the landing gear assembly, rather than the bogie beam itself, thus reducing the localised stresses induced in the bogie beam sidewall.

Claims

Claims
1. An aircraft landing gear assembly comprising a bogie beam, an axle extending through the bogie beam and a jacking dome fitting extending through a sidewall of the bogie beam and arranged to be in contact with the axle during jacking so as to transfer vertical loads applied to the jacking dome fitting directly to the axle.
2. An aircraft landing gear assembly according to claim 1, wherein the bogie beam sidewall includes a region of increased thickness through which the jacking dome fitting extends and which is arranged to react lateral loadings applied to the jacking dome fitting.
3. An aircraft landing gear assembly according to claim 2, wherein the region of increased thickness is either integrally formed in the bogie beam sidewall or comprises a separate element secured to the bogie beam sidewall.
4. An aircraft landing gear assembly according to any preceding claim, wherein the jacking dome fitting is biased into contact with the axle.
5. An aircraft landing gear assembly according to claim 4, wherein the jacking dome fitting is secured to one end of an elongate resilient element, the elongate resilient element biasing the jacking dome fitting into contact with the axle.
6. An aircraft landing gear assembly according to claim 4, wherein one or more edge elements are located between a portion of the jacking dome fitting and the bogie beam sidewall, thereby urging the jacking dome fitting into contact with the axle.
7. An aircraft landing gear assembly according to claim 4, wherein the jacking dome fitting includes a threaded collar in engagement with a threaded portion of the jacking dome fitting and in engagement with the bogie beam sidewall, whereby the threaded collar urges the jacking dome fitting into contact with the axle.
8. An aircraft landing gear assembly according to any one of claims 1 to 3, wherein the jacking dome fitting is biased away from the axle when said jacking dome fitting is not loaded by a jack.
9. An aircraft landing gear assembly according to claim 1, wherein the jacking dome fitting comprise a further portion in mechanical engagement with the axle, whereby lateral loads applied to the jacking dome fitting are transmitted to the axle.
10. An aircraft landing gear assembly according to claim 9, wherein the further portion encircles a region of the axle and the further portion and the axle include aligned recess arranged to receive a locking spigot pin.
EP11778948.7A 2010-11-04 2011-10-28 Landing gear bogie beam with jacking dome Active EP2635490B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1018630.2A GB2479223B (en) 2010-11-04 2010-11-04 Landing gear jacking dome
PCT/GB2011/052108 WO2012059742A1 (en) 2010-11-04 2011-10-28 Landing gear bogie beam with jacking dome

Publications (2)

Publication Number Publication Date
EP2635490A1 true EP2635490A1 (en) 2013-09-11
EP2635490B1 EP2635490B1 (en) 2016-04-06

Family

ID=43414346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11778948.7A Active EP2635490B1 (en) 2010-11-04 2011-10-28 Landing gear bogie beam with jacking dome

Country Status (6)

Country Link
US (1) US9272774B2 (en)
EP (1) EP2635490B1 (en)
CN (1) CN103189275B (en)
CA (1) CA2815157C (en)
GB (1) GB2479223B (en)
WO (1) WO2012059742A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3090943A1 (en) * 2015-05-05 2016-11-09 Goodrich Corporation Landing gear including a bogie beam assembly and method for coupling an axle to a bogie beam thereof

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3575210B1 (en) * 2018-05-30 2023-08-30 Safran Landing Systems UK Ltd Landing gear assembly

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB794034A (en) * 1953-12-24 1958-04-30 Armin Wirth Improvements in and relating to apparatus for weighing large objects
US3042130A (en) * 1959-10-27 1962-07-03 Gen Aeromation Inc Ground mover and retriever vehicle for airplanes
SU1352849A1 (en) * 1986-04-07 1996-07-10 В.Д. Алтухов Aircraft undercarriage bogie
DE3623005A1 (en) 1986-07-09 1988-01-28 Hydro Geraetebau Gmbh & Co Kg WHEEL CHANGER FOR AIRCRAFT
GB9317518D0 (en) * 1993-08-23 1993-10-06 Rolls Royce Plc Improvements in or relating to investment casting
US5595359A (en) * 1994-11-22 1997-01-21 The Boeing Company Landing gear axle steering
US5743491A (en) * 1994-12-08 1998-04-28 The Boeing Company Very large aircraft landing gear having eight wheel truck
US6173920B1 (en) * 1994-12-08 2001-01-16 The Boeing Company Very large aircraft landing gear having eight wheel truck
CN2707619Y (en) * 2004-04-26 2005-07-06 马玉山 Carrying and transporting equipment of airplane emergency rescue
GB0603539D0 (en) * 2006-02-22 2006-04-05 Airbus Uk Ltd Control surface failsafe drop link
GB2474686B (en) * 2009-10-23 2016-08-31 Messier-Dowty Ltd Bogie stop block
GB201009548D0 (en) * 2010-06-08 2010-07-21 Rolls Royce Plc A mounting assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012059742A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3090943A1 (en) * 2015-05-05 2016-11-09 Goodrich Corporation Landing gear including a bogie beam assembly and method for coupling an axle to a bogie beam thereof

Also Published As

Publication number Publication date
GB2479223A (en) 2011-10-05
CA2815157C (en) 2016-07-05
GB201018630D0 (en) 2010-12-22
GB2479223B (en) 2012-11-21
CN103189275A (en) 2013-07-03
WO2012059742A1 (en) 2012-05-10
CN103189275B (en) 2016-04-06
CA2815157A1 (en) 2012-05-10
US20130327889A1 (en) 2013-12-12
EP2635490B1 (en) 2016-04-06
US9272774B2 (en) 2016-03-01

Similar Documents

Publication Publication Date Title
CN102712322B (en) The through transport rolling stock for the formation of train improved
EP2735489B1 (en) Railway vehicle steering truck
US7571917B2 (en) Link for a vehicle wheel suspension system with a predetermined breaking point
EP2635490B1 (en) Landing gear bogie beam with jacking dome
CN108583607A (en) A kind of trailer gauge-changeable bogie used for rail vehicle
US9863455B2 (en) Pin joint assembly
MX2011006966A (en) Brake shoe support assembly and method.
US20140084108A1 (en) Aircraft landing gear
CN107848352B (en) Bushing pin, bracket and mounting assembly for a V-pillar of a vehicle
JP2006275230A (en) Brake lining and disc brake for railroad vehicle
JP5950752B2 (en) Railcar bogie and shaft spring height adjustment system
US10710614B2 (en) Wheel load adjusting tool of railcar bogie, railcar bogie including the same, and method of manufacturing railcar bogie
CN110366499A (en) The suspension system of vehicle axles
EP2537748B1 (en) Aircraft landing gear
JP2000280903A (en) Axle box support device for railway rolling stock
CN113696924B (en) Suspension device, positioning spring, bogie and rail train
CN106005381B (en) Brake lever assembly
CN108725759B (en) Aircraft landing gear assembly
WO2017213271A1 (en) Dump truck
EP2992239B1 (en) Spring device and spring suspension
RU2386545C2 (en) Solid-rolled railroad wheel
US20230382161A1 (en) Spring support device and vehicle having the same
CA2348619A1 (en) Elastomeric mounting (d)
CN111376928A (en) Connecting device between highway and railway combined transport carriage supporting rod and end platform
CA3049895A1 (en) Coupling plate for a fifth wheel coupling

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20130412

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150630

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20151006

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 787489

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160415

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011025009

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

Ref country code: NL

Ref legal event code: MP

Effective date: 20160406

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 787489

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160806

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160706

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160808

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160707

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011025009

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

26N No opposition filed

Effective date: 20170110

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

Owner name: SAFRAN LANDING SYSTEMS UK LTD, GB

Effective date: 20170404

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161031

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161028

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20111028

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: MT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20161031

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160406

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230920

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230920

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20230920

Year of fee payment: 13